Dead-code removal, perf fixes, deterministic seed emission

Round 1 (correctness + dead code):
- Fix duplicate java.util.HashMap registration in host-static.ss: the alist
  impl shadowed the hashtable ctor while leaving the hashtable methods bound,
  so .keySet/.values/.remove/.clear crashed. Drop the alist version.
- Delete jolt-core/jolt/reader.clj: a 463-line dead duplicate reader, never
  required or compiled (the live reader is host/chez/reader.ss) and drifted.
- Remove dead defs: ir/rt + :rt op + unused ir/op; the Janet branch in
  clojure.edn/drain-reader; a shadowed first clojure.string/trim-newline;
  io.ss jolt-char-array + the reader def-var (both shadowed by natives-array);
  concurrency.ss jolt-future-done?*; compile-eval.ss jolt-analyze-emit.

Round 2 (perf + determinism):
- emit-quoted-map-value / quoted sets now emit sorted by emitted text instead
  of host-hash order, which isn't stable across Chez versions (jolt-8479).
- jolt-into folds through a transient, so into/vec/mapv/filterv onto a vector
  are O(n) instead of O(n^2).
- deps resolve-deps walks its queue with an index cursor (was subvec-per-pop).
- async channel and agent action queues use amortized-O(1) FIFOs; ArrayList is
  backed by a growable vector (O(1) add/get) instead of a list.

host/chez/compile-eval.ss

@@ -62,10 +62,6 @@
          (ir (jolt-ce-analyze ctx form)))
     (jolt-ce-emit ir)))
 
-;; Source string -> Scheme source string (read then analyze -> emit, all on Chez).
-(define (jolt-analyze-emit src ns)
-  (jolt-analyze-emit-form (jolt-ce-read src) ns))
-
 ;; --- runtime defmacro -------------------------------------------------------
 ;; Shared with emit-image.ss (loaded after this). A defmacro lowers to a def of
 ;; its expander fn + a macro flag, exactly as the prelude emits build-time macros.